DrugBank -- professional level information
* lists alternate names for each drug
* provides each drug's formula, 2-D structural diagram, and rotatable 3-D structural diagram
* provides each drug's PubChem, CAS Registry, KEGG Compound, etc. numbers
* lists physical properties of each drug
* provides links to clinical information and the FDA label for each drug
* provides the protein sequence of the drug's target and information about the target's function
* provides drug target SNPs